[PATCH v7 32/47] block-copy: Use CAF to find sync=top base

[Max Reitz]

Signed-off-by: Max Reitz <mre...@redhat.com>
---
 block/block-copy.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/block-copy.c b/block/block-copy.c
index f7428a7c08..5e80569bb8 100644
--- a/block/block-copy.c
+++ b/block/block-copy.c
@@ -437,8 +437,8 @@ static int block_copy_block_status(BlockCopyState *s, 
int64_t offset,
     BlockDriverState *base;
     int ret;
 
-    if (s->skip_unallocated && s->source->bs->backing) {
-        base = s->source->bs->backing->bs;
+    if (s->skip_unallocated) {
+        base = bdrv_backing_chain_next(s->source->bs);
     } else {
         base = NULL;
     }
-- 
2.26.2